Oil-temperature regulator



Sept. 16, 1930. v. PARKINS OIL TEMPERATURE REGULATOR Filed May 10, 1928 3 Sheets-Sheet I Se t. 16, 1930. v. PARKINS OIL TEMPERATURE REGULATOR Filed May 10, 1928 3 Sheets-Sheet 2 a m M a P K Sept. 16, 1930. v. PARKINS OIL TEMPERATURE REGULATOR Filed May 10, 1928 3 Sheets-Sheet 3 5' u uc 1 l TM 7 Parkina Patented Sept. 16, 1930 UNITED STATES- VIRGIL PARKINS,

PATENT OFFICE or TIFFIN, oriro OIL-TEMPERATURE REGULATOR Application filed May, 10, 1928. Serial No. 276,718.

cating oil will be maintained at an even temhereto attached, in which,-

perature either in warm or cold weather.

Another object of the invention is to provide a device of this character so constructed that the oil.can be quickly heated in cold weather in order that it will quickly flow to the proper points to assure proper lubrication thereof. I

Another object of the invention'is to provide a device of this character which is auto matic in operation, the construction being such that the oil will'be permitted to freely circulate and be pumped to the proper bear ing and will be maintained at an effective consistency to assure efiicient lubrication.

Another object of the invention is to pro vide a device of this character which is simple in construction, efiicient in operation, durable, and one which can be manufactured at a very small cost. it

While the drawings illustrate a preferred embodiment of the invention it is to be understood that in adapting the means to meet specific needs and requirements the design may be varied and such other changes in the minor details of construction may beresorted to within the scope of the invention as claimed, without departing from the spirit thereof. For a full understanding of the invention and the merits thereof, reference is to be had to the following description and the drawings Figure. 1 is a side elevation of an engine,

' parts broken away and showing the relative Figure 2.

arrangement of the parts in connection there-..

with. p

Figure is a sectional view-of the thermal Figure?) a sectional view on line 33 of 1.$ a detail sectional view of the Figure 4 P p Figure 5 is a front elevation of the radiator. v

Figure 6 is a fragmentary vertical sectional view through the same.

Figure '7 is a sectional View through the exhaust pipe and gas controlling valve.

Figure 8 is a sectional View through the safety valve.

Figure 9 is a horizontal sectional view through the heater.

Referring to the drawings, 1 designates a gas engine of conventional form, and 2 the radiator thereof, which differs from the usual radiator inasmuch as an oil radiator 3 is formed in the lower end thereof. The radiator has associated'with the forward side thereof a plurality of shutters 4 which control the entrance of air through the passage 5, said shutters being pivotally connected by a rod 6 serving to simultaneously shift the shuttersin a manner to be hereinafter'described.

An oil pump 7 of the'double gear type isconnected with the crank case through a pipe 9 and as usual is operated by the shaft 10 driven by the cam shaft 11 of the engine, or in any other appropriate manner. The pump casing 12 has fixed thereto a valve casing 13 provided with a discharge 15 which leads to the crank case 8, said'casing having a seat 15 which has engaged thereon a spring pressed valve 16, the purpose of which will appear later. It will be of course understood that the pump serves to force oil to the various bearings, as customary. Leading from 8 the pump 7 to the oil radiator 3 is a pipe assembly 17 which carries a valve casing 18 in which is formed a seat 19, said casing having a cap 20 thereon andvin which is adjustably threaded the tubular stem21.

- Cooperating with the seat. 19 is a valve 22, the'stem 23 of which extends into the stem 21, there being a washer24gengaged upon the stem 21, and encircling the stem'23 and interposed between the' valve 22 and-washer 24; is a coil spring 25, the tension of which being.. obviously regulated, upon adjusting the stem 21.

A pipe 26 leads from the 9 radiator t9 the crank case 8 in orderthat the oil can freely circulate in the crank case and reservoir.

Associated with the bottom of the crank case is a heater 27 which comprises a housing 28, said housing having mounted therein a central partition 29 to provide a circuitous passage 30, there being bafiles 31 in the housing to retard the flow of hot gas as it flows through the circuitous passage 30. Leading from the housing is a pipe 32 which extends to the muffler, not shown, the exhaust gases from the exhaust manifolds 33 flowing through the pipe 34 to the housing 24 and from thence into the exhaust pipe 32, when the valve plate 35 is open. The valve plate 35 closes the seat 36 formed at the juncture of the pipe 34 and main exhaust pipe 37, said plate being pivoted on a shaft 39 to one end of which is fixed a pinion 40 which is in mesh with the teeth of the segment 41 pivotally mounted, as at 42, said segment having an arm 43.

A thermal unit 44 is employed and comprises a body 45 which is screwed in the wall of the crank case 8 for disposition transversely within the crank case and in a position to be submerged in the oil. This body has a longitudinal chamber 46 in which is located the thermal rod 47, the inner end of which bears against the closed end 48 of the chamber so that the expansive action of the rod will be outwardly. The outer end of the rod 47 is formed with a worm 48 which extends a short distance beyond the head 49 of the body 45, said head being squared in order that the unit can be conveniently screwed into the crank case. The worm 48 engages the interior teeth 50 of the gear 51 in order that when the rod expands or contracts rotary movement will be imparted to said gear. This gear has a collar 52 provided with an annular flange 53 which is engaged by the plate 54 fixed to the head 49 to maintain the gear against displacement, but at the same time permits the same to rotate freely. Meshing with the gear 51 are the teeth ofthe segment 55 which is pivotally connected to the head 49, as at 56, said segment having-an arm 57 This arm operates in a slot 58 formed in the protective casing 59 bolted to the head 49.

The arms 43 and 57 of the respective segments are pivotally connected by a rod 60, the latter being connected to the shutter controlling rod 6 by a rod 61.

It will be obvious that when the engine has been idle the oil in the crank case will 'be comparatively cold, especially in winter.

In order to heat the oil quickly, the valve plate 35 may be opened manually by swinging the arm 43, whereupon the shutters 4 will close. The engine is started and the exhaust gas enters the heater 27 to heat the oil in the crank case 8 to a consistency suitable for free circulation. The valve 22 remains seated until the pressure 1n the pipe assembly the oil radiator 3. When the oil reaches a temperature above that desired and efl'ective, the thermal rod 47 will expand and rotate the gear 51, thus rocking the segment 55 and arm 57 which pulls upon the rod 60 and pushes upon the rod 61, whereupon the valve 35 will close and the shutters open, thus cutting off the exhaust to the heater and permitting air to pass through the passage 5 to cool the oil. If the temperature of the oil drops the rod 47 will contract, whereupon the valve 35 will open and the shutters close. 'In this manner the oil can be maintained at an even temperature.

Should the valve 22 fail to unseat from any cause, the pressure of the oil in the easing 12 induced by the pump will unseat the valve 16 and permit the oil to flow into the crank case 8.

Any suitable means may be connected to the arm 43 in order that the same can be operated from the instrument board of a vehicle, when desired. Obviously after the engine is started the operation of the device will be wholly automatic.

While I have illustrated and described the oil radiator for containing the surplus oil as being a part of the usual radiator, it will be of course understood that it can be a separate unit, and that the heater can be an integral part of the crank case or may be in the nature of an attachment.

Fromthe foregoing, it is thought that theconstruction, operation and many advantages of the herein described invention will be apparent to those skilled inthe art, without further description, and it will be understood that various changes in the size, shape and proportion and minor details of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus described the invention, I claim:

1. In an oil temperature regulator for explosive engines, an oil radiator, a valve in the exhaust pipe of the engine, a heater, shutters associated with the radiator, a thermostat extended into the crank case of the engine and operable by the temperature of the oil for controlling the opening and closing of the valve to regulate the flow of exhaust gas to the heater, said thermostat also controlling the opening and closing of the shutters, as and for the purpose set forth.

2. In an oil temperature regulator for explosive engines, an oil radiator having shutters associated therewith, a heater associated with the crank case of the engine, a valve controlling the flow of exhaust gas from the exhaust manifold of the engine to the heater, a thermostat controlled by the temperature of the oil in the crank case, and an arm rockv exhaust manifold pipe able by able by the expansion and contraction of the thermostat to alternately open and close the valve and shutters, as and for the purpose set forth.

3. In an oil temperature regulator for explosive engines, an oil radiator in which oil from the crank case circulates, a thermostat extended into the crank case, an arm rocka thermostat during the expansion and contraction thereof upon change of temperature of oil in the crank case, shutters associated with the radiator, a valve in the of the engine, and rods connecting the arm, valve and shutters, for alternately opening and closing the valve and shutters, as and for the purpose set forth.

4. In anoil temperature regulator for explosive engines, an oil radiator having shutters associated therewith, means for circulating oil from the crank case of the engine into the radiator, a valve in the exhaust pipe of the engine, a thermal unit extended into the crank case of the en ine and including a bar, a gear associated with the bar and rotatable upon the expansion and contraction thereof, an arm rockable by the gear and having a rod extending therefrom and connected with the shutters, and a second rod connected with the valve for alternately opening and closing the shutters and valve upon rotation of the 5. In an oil temperature regulator for explosive engines including a heater for cooperation with the crank case of the engine, a valve controlling the flow of exhaust gas from the exhaust manifold to the heater, an oil radiator having shutters associated therewith, means for circulating the oil from the crank case of the engine to the radiator, a thermostat extended into the crank casin and including a rod having a worm carried thereby, a gear connected on the worm, a segment in mesh with the gear and including an arm, a rod pivotally connecting the shutters and arm, a second rod pivotally connecting the arm and valve, said gear be1n rotatable upon the expansion and contract1on of the rod for alternately shifting the'first and second named rods for alternately opening and closing the shutters and valve.

In testimony whereof I afiix m VIRGIL PARKIN si nature. L. 5.] 

